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From: Sergey Shtylyov <s.shtylyov@omp.ru>
To: Geert Uytterhoeven <geert+renesas@glider.be>,
	Rob Herring <robh@kernel.org>,
	Marc Kleine-Budde <mkl@pengutronix.de>,
	Vincent Mailhol <mailhol.vincent@wanadoo.fr>,
	Vinod Koul <vkoul@kernel.org>,
	Kishon Vijay Abraham I <kishon@kernel.org>,
	Peter Rosin <peda@axentia.se>,
	Aswath Govindraju <a-govindraju@ti.com>
Cc: <linux-can@vger.kernel.org>, <linux-phy@lists.infradead.org>,
	<linux-renesas-soc@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] phy: can-transceiver: Re-instate "mux-states" property presence check
Date: Wed, 19 Mar 2025 18:35:47 +0300	[thread overview]
Message-ID: <5691f9a6-07f0-4295-a25d-cb5bc572e824@omp.ru> (raw)
In-Reply-To: <6bcfde63b3a6b25640a56be2e24a357e41f8400f.1742390569.git.geert+renesas@glider.be>

On 3/19/25 4:27 PM, Geert Uytterhoeven wrote:

> On the Renesas Gray Hawk Single development board:
> 
>     can-transceiver-phy can-phy0: /can-phy0: failed to get mux-state (0)
> 
> "mux-states" is an optional property for CAN transceivers.  However,
> mux_get() always prints an error message in case of an error, including
> when the property is not present, confusing the user.
> 
> Fix this by re-instating the property presence check.
> 
> This is bascially a revert of commit d02dfd4ceb2e9f34 ("phy:

   Basically. :-)

> can-transceiver: Drop unnecessary "mux-states" property presence
> check"), with two changes:
>   1. Use the proper API for checking whether a property is present,
>   2. Do not print an error message, as the mux core already takes care
>      of that.
> 
> Fixes: d02dfd4ceb2e9f34 ("phy: can-transceiver: Drop unnecessary "mux-states" property presence check")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> Alternatively, the multiplexer subsystem needs to gain support for
> getting an optional mux...
[...]
MBR, Sergey


  parent reply	other threads:[~2025-03-19 15:36 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-19 13:25 Geert Uytterhoeven
2025-03-19 13:27 ` Geert Uytterhoeven
2025-03-19 14:06 ` Vincent Mailhol
2025-03-19 15:48   ` Vincent Mailhol
2025-03-20 10:25   ` Geert Uytterhoeven
2025-03-20 11:29     ` Vincent Mailhol
2025-03-19 15:35 ` Sergey Shtylyov [this message]
2025-03-20 15:00 ` Biju Das

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